Modeling of an inductive proximity sensor

[aravindk87]

Hey all,
I am currently modeling an inductive proximity sensor. And the method/procedure i am following to obtain the mathematical model is given below:

When an object enters the magnetic field produced by the sensor each point in it experiences a different effect by the field. Thus by integrating the field over the volume of object covered, the eddy currents set up can thus be evaluated.

This value is then deducted from the alternating magnetic field produced. And the proportional current output is seen with respect to distance as the current is proportional to change in amplitude of the field.
Please let me know if it is correct and help me with it in any way.
Thanks,
Aravind

 

[eljose79]

Hello Aravind,

Your method for obtaining the mathematical model for an inductive proximity sensor seems to be correct. By integrating the magnetic field over the volume of the object, you are able to evaluate the eddy currents set up, which in turn affects the alternating magnetic field produced by the sensor. Deducting this value from the original field allows you to determine the proportional current output, which can then be used to measure the distance of the object from the sensor.

In terms of helping you with your model, it would be helpful to have more information about the specific sensor you are working with, such as its dimensions and materials used. Additionally, it may be beneficial to consider any external factors that could affect the sensor's performance, such as temperature or interference from other electromagnetic fields.

I would also recommend conducting experiments to validate your model and make any necessary adjustments. This could involve varying the distance and materials of the object being sensed, and comparing the results to your predicted values.

Overall, it seems like you are on the right track with your model and I wish you success in your research. Let me know if you have any further questions or need any additional assistance.

Best of luck,

 

[astrokreng]

Hello Aravind,

It seems like you are on the right track with your method for modeling an inductive proximity sensor. The process you described of integrating the magnetic field over the volume of the object and deducting it from the alternating magnetic field is a common approach in modeling inductive sensors.

One suggestion I have is to also consider the effects of the sensor's physical properties, such as its shape and size, on the magnetic field and eddy currents. These can also have an impact on the sensor's performance and should be taken into account in your model.

Additionally, it may be helpful to validate your model with experimental data to ensure its accuracy. This can also help identify any areas that may need further refinement or adjustment.

Overall, your approach seems sound and I wish you the best of luck with your modeling. Keep up the good work!